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sansummer:自己回帖吧查了国标有如下公式: ?o/p}6 ....... (2011-06-29 10:24) @:!% Z`
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sansummer:自己回帖吧查了国标有如下公式: K+c>Cj}H ....... (2011-06-29 10:24) ,Onu%